netdev - [PATCH net-next] net/sched: act_ct: Offload only ASSURED connections

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Message-ID: <20211201133153.17884-1-cmi@nvidia.com>
Date:   Wed, 1 Dec 2021 15:31:53 +0200
From:   Chris Mi <cmi@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <kuba@...nel.org>, <ozsh@...dia.com>,
        <roid@...dia.com>, <paulb@...dia.com>, Chris Mi <cmi@...dia.com>
Subject: [PATCH net-next] net/sched: act_ct: Offload only ASSURED connections

Short-lived connections increase the insertion rate requirements,
fill the offload table and provide very limited offload value since
they process a very small amount of packets. The ct ASSURED flag is
designed to filter short-lived connections for early expiration.

Offload connections when they are ESTABLISHED and ASSURED.

Signed-off-by: Chris Mi <cmi@...dia.com>
Reviewed-by: Oz Shlomo <ozsh@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
---
 net/sched/act_ct.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index 90866ae45573..ab1810f2e660 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -393,7 +393,8 @@ static void tcf_ct_flow_table_process_conn(struct tcf_ct_flow_table *ct_ft,
 {
 	bool tcp = false;
 
-	if (ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY)
+	if ((ctinfo != IP_CT_ESTABLISHED && ctinfo != IP_CT_ESTABLISHED_REPLY) ||
+	    !test_bit(IPS_ASSURED_BIT, &ct->status))
 		return;
 
 	switch (nf_ct_protonum(ct)) {
-- 
2.21.0